1.Take a bowl add 1 cup curd and whisk it,add besan flour 1 tbsp mix well,1/4 tbsp turmeric powder,coriander powder 1/2 tbsp,dry mango powder 1/2 tbsp and mix well all the ingredients evevnly ini curd.2.Take a pan pour some ghee and melt it.3.Add cumin seeds 1/2 tbsp,sounf 1/2 tbsp,green chillies,curry leaves and saute.4.Add inguva a pinch,tomatoies chopped 1 cup,some water as we needed,cover and cook for few minutes.5.Add curd mixture and some water,give it a mix.6.Add salt to taste,sugar and bring it to boil,finally add boiled potatoes some water and cook for few minutes.7.Finally add garam masala powder and give it a mix,transfer into a bowl,serve hot.